Burglarproof window lock



Patented Mar. 24, 1925. i.

f UNITED STATES PATravi",'ol-rl-cra.

SMITH C. BllRGrI-, OF SCAPPOOSE, OREGON.

BURGLAnPRooF wrnnjow 1.00K.

. Application Ied January 16,v 1923. Serial No. 612,950.

To allwhom t may concern.'

Be it known that I, SMITH C. Banen, a citizen of the United States, residing at` Scappoose, in the county of Columbia and j the State ot'Oregon, have inventeda new,

and usefulv Burglarproof 'Vindow Lock, of which the following is a specification.

My invention is intended tor attachment to the window sash torresidences, places oit business and elsewhere, wherein a4 device is required for easy attachment to the window, and is so arranged that the window sash may be set at any desired position, and the same cannot be changed without first having released the lock. j The lock may be attached to a window already in place in an easy manner, can be made in a number of sizes, can be adapted for attachment on any kind of a sash, and any one can operate the same, as it is ot simple construction, and will not easily get out of operating condition, the same may be used in conjunction with a winding using sash weights or it may be installed independently of the sash weight, there being ample support in the lock to support the sash in any desired position.

I attain these objects by the mechanism illustrated in the accompanying' drawings, in whichn Fig. 1 is a window frame of the usual type, and having the two sash window of the kind adapted to vertical adjustment, in this view are shown two of my window locks secured to the lower sash, though on win dow sashes of the smaller sizes it is possible to require but one of my locks. vFig. 2 is an enlarged detached view of the lock with the cover plate removed to better illustrate the construction of my lock and the operation of the same, in this view the lock is shown in operative position with the stop pawls in engagement with the window frame. Fig. 3 is a front view of the detached lock having the closure plate also removed, but showing the lock in inoperative position, when the lock is in this position, the window sash may be readily raised, lowered, or adjusted, but when the lever clamps are released, the lock at once posi tions the sash in a locked position, in which position it remains until the levers are compressed as shown in Fig. 3 thereby releasing the pawls from engagement withthe window frame member. Fig. 4 is an enlarged `view of the lock in place upon the window` sash and in locked position, with the closure plate on Aand theqlockcomplete. Fig. 5 is a cross section viewof the lock as shown in Fig. 3 and is taken online B B, this view clearly shows the inner construction of my lock. Fig. 6 is a section View taken on line A and is made to illustrate the method of holding' the lever in place about the journal and is made with the closure plate on.

f Similar letters and numerals `refer to similar parts throughout the several views.

1 is the window frame, and 2 is the lower sash` of the vertical adjustable type, 3 is the base of my lock towhich the other at-` dow sash.V 4 is a pawl like member jour-v naled about pin 5y which passesthrough kthe base and the closure plate and forms a rigid journal to support the pawl 4 when an eXtra exertion -would be made upon the sash to force the same open. Passing through the inner end ofthe pawl member 4 is a pin 6 about which t-he link y7 is jo-urnaled on its one end, it being journaled about the other on pin 8 which is held in place in lever 9. Lever 9 is pivoted about journal 1Q which also passes through or into the base 3 and the closure plate 14. To hold the pawl member in the normal or operative position a small pressure spring 11 is positioned be-` pose of preventing the raising of the sashkr when in locked position but it is apparent that a similar series of members in the opposite position will be required if the window sash is to be `locked in position to prevent the lowering or' the sash. This is accomplished as shown by pawl member 15 being journaled about pin 16 and the pin 17 engaging the member 15 and the link 18 being j ournaled at the other end to receive pin 19 which in turn is attached to lever 20 which is pivoted about pin 21 which is secured to the base 3 and the closure plate 14. The spring 11 engages and contacts with the pawl 15 upon the shoulder 13a.

Having thus described my invention in such detail that any one skilled in the art may make the same, Iwish to make the following claims therefor 1. In combination, a casing open at oppo sharp to engage the material of said frame,y

a pair of links each pivoted to the remaining angle of arespective pawl, apair ot T- shaped levers each having a stem projecting from the open side remote fromthe frame and having its arms pivoted respectively to the casing and one oit. the links, and spring means urging the sharp angles of said pawls toward the Window frame and the stems of the levers apart. I

2. In combination, a casing open at opposite sides and adapted to be secured to the inner face of a Window sash with one open side facing the side of the Window frame. a pair a of substantially triangular paWl members positioned in the casing with a side adjacent and substantially parallel to the horizontal ends of said casing, said pawls each having an angle opposite said side pivoted to the casing, the pivots being in vertical alinement and adjacent each, the angle of each paWl adjacent the Window frame being sharp' to engage the material of said limit stop for the movement of said levers toward each other, a post adjacent said rib, a V-shaped spring having its apex held between said post 'and rib' and its arms constantly tending to moveapart, and `shoulders on the paWls4 against Which said arms engage to torce the pawls into engagement with vthe Window frame.

In testimony that I claim the foregoing as my own I hereunto attach my signature in the vpresence of two witnesses.

SMITH C. BERGI-I.

vWitnesses: i.

E. E. WIST, C. O. A. WIST. 

